Freiburg 2019 – wissenschaftliches Programm

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FM: Fall Meeting

FM 64: Poster: Topology

FM 64.1: Poster

Mittwoch, 25. September 2019, 16:30–18:30, Tents

Majorana bound states in hybrid two-dimensional Josephson junctions with ferromagnetic insulators — •Pauli Virtanen — University of Jyväskylä, Finland

We consider a Josephson junction consisting of superconductor/ferromagnetic insulator (S/FI) bilayers as electrodes which proximizes a nearby two-dimensional (2D) electron gas. We address the 2D bound-state problem by a transfer-matrix approach that reduces the problem to an effective 1D Hamiltonian. We consider a narrow channel coupled with multiple ferromagnetic superconducting fingers, and discuss the topological invariants, spectrum, free energy, and multiterminal Josephson currents of the setup.